#04011b

Color #04011b

A vivid, highly saturated very dark blue.

Closest named color Black #000000 · ΔE 14.21 Nearest Tailwind class slate-950 #020618 · ΔE 4.2

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Conversions

HEX

#04011b

RGB

rgb(4, 1, 27)

HSL

hsl(246.9, 92.9%, 5.5%)

HSV / HSB

hsv(246.9, 96.3%, 10.6%)

CMYK

cmyk(85.2%, 96.3%, 0%, 89.4%)

LAB

lab(1.14, 5.67, -12.98)

LCH

lch(1.14, 14.16, 293.6)

OKLCH

oklch(11.5%, 0.0615, 281.16)

HWB

hwb(246.9, 0.4%, 89.4%)

Harmony colors

Complementary

#181b01

Analogous

#010b1b

#04011b

#11011b

Triadic

#04011b

#1b0401

#011b04

Split-complementary

#04011b

#1b1101

#0b1b01

Tetradic

#04011b

#1b0118

#181b01

#011b04

Square

#04011b

#1b010b

#181b01

#011b11

Shades

Color #04011b mixed toward black.

#030117

#030112

#02000e

#010009

#010005

Tints

Color #04011b mixed toward white.

#0f0469

#1b07b6

#3017f6

#7564f9

#bab2fc

Tones

Color #04011b mixed toward gray.

#060319

#070517

#090815

#0b0a12

#0c0c10

Accessibility

Aa White text on this color

20.48:1

Aa Black text on this color

1.03:1

White text reads better on this background (20.48:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#030317 · ΔE 3

Deuteranopia

#030316 · ΔE 3.5

Tritanopia

#041312 · ΔE 15.3

Achromatopsia

#040404 · ΔE 11.5

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #04011b;

Tailwind (arbitrary value)

bg-[#04011b]

Related colors

Slate Blue #6a5acd

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#04011b (#04011b) is rgb(4, 1, 27) in RGB.

No, #04011b is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #04011b, or check how it holds up for accessibility.

Generate a palette → Check contrast